The "Homade LEGO MP3 player" is neither home-made nor officially a LEGO product, but its clever design—each nub is a button—is almost enough to convince me to make a purchase, despite a price of $46 with no built-in memory (it takes micro SD) and a size considerably larger than a real LEGO element. (we can't quite figure out exactly how large the player might be, although we doubt it's 24 centimeters long as is stated on the product page. It uses a single AA battery for power, though, so that should give some rough idea.)... (Link)